Functional imaging as an aid to decision-making in metastatic paraganglioma

The British Journal of Radiology
J B BomanjiP J Ell

Abstract

Malignant paraganglioma is a rare and slow growing tumour of neuroendocrine origin. At the time of diagnosis, the tumour is usually widespread, with limited therapeutic options. A variety of functional imaging studies are available for staging the disease, guiding therapy and monitoring treatment response. These include 123I-MIBG or 131I-MIBG, 111In-pentetreotide or 111In-lanreotide (somatostatin analogues), and 18F-FDG positron emission tomography. Various radionuclides, including 131I and 90Y, can be targeted to the tumour using MIBG or pentetreotide. Such targeted radionuclide therapy may provide valuable long-term palliation in such patients. We present two cases with metastatic paragangliomas who had widespread soft tissue and bone metastases. One patient was treatment naive and the second had received previous chemotherapy. The functional imaging work-up performed and the targeted radionuclide therapies considered in these patients are described. Both patients were treated with 131I-MIBG. Partial tumour response and complete symptomatic and hormonal response was achieved in one patient; in the second patient there was no change.

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Citations

Oct 26, 2007·The British Journal of Radiology·S BhattV S Dogra
May 21, 2004·The British Journal of Radiology·K ZaplatnikovF Grünwald
Aug 14, 2012·The Journal of Membrane Biology·Elham Raeisi, Lluis M Mir
Jun 1, 2013·Skeletal Radiology·Bharat RekhiNirmala A Jambhekar
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Apr 20, 2006·Clinical Nuclear Medicine·Eyal FenigAdam Steinmetz
Sep 25, 2010·Head & Neck Oncology·Daniel J MoskovicMichael E Kupferman

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